A sodium-potassium pumpSelect one:O a.moves three potassium ions out of a cell and two sodium ions into a cell using energy from ATP hydrolysisO b. moves three sodium ions out of a cell and two potassium ions into a cell using energy from ATP hydrolysisc.move three sodium ions out of a cell and two potassium ions into a cell and generates an ATP in eachcycleO d. moves three potassium ions out of a cell and two sodium ions into a cell while producing ATP for eachсycleNext pagere.pptxMacBook Pro

The sodium potassium pump system transfers sodium and potassium ions against concentration gradient.

Answered: A sodium-potassium pump. Select one: O…

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter3: Cell Structure And Function

Section: Chapter Questions

Problem 12RQ: Water moves via osmosis _______. a. throughout the cytoplasm b. from an area with a high...

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Which of the following is not produced by an animal muscle cell operating under anaerobic conditions? a. heat d. ATP b. pyruvate e. lactate c. PGAL f. oxygen
Figure 6.14 The hydrolysis of one ATP molecule releases 7.3 kcal/mol of energy (?G = -7.3 kcal/mol of energy). If it takes 2.1 kcal/mol of energy to move one Na+ across the membrane (?G = +2.1 kcal/mol of energy), how many sodium ions could be moved by the hydrolysis of one ATP molecule?
A characteristic of carrier molecules in a primary active transport pump is that: a. they cannot transport a substance and also hydrolyze ATP. b. they retain their same shape as they perform different roles. c. their primary role is to move negatively charged ions across membrances. d. they move Na+ into a neural cell and K+ out of the same cell. e. they act to establish an electrochemical gradient.
What event is illustrated in the figure below? ATP ADP v
a A group of sientists studied the uptake of sodium of ions by living tissue (animal samples). To do this, they: • Used iwo flasks, Fand G • Placed equal masses of tissue into cach flask • Added an equal amɔunt of sodium (Na+) ions in each flask • Added a substance that preverts ATP formation by cel's in flask F • Measured the concentration of remaining sodium ions in cach flask The resuit of this investigation is shown in the graph below. 10 Flask F Concentration of sodium ions remaining in the soludion/arbitrary 4 units Fask G 10 20 30 40 50 60 70 Time / minutes i From the graph, calculate the rate of uptake of sodium ions by the ceils in flask G during the first 20 minutes of this investigation. ii. At the end of this investigation, the scientists concluded that the cells in flask G took up the sodium ions by active transport. Examine how the information given supports the conclusion. i. The curve for flask F becomes constant after 20 mimutes. Explain why.
H* H* P + ADP ATP What class of membrane pump is shown in the figure below? O F-Class ATPase V-Class ATPase O P-Class ATPase
Which of the following is true of the FoF1 ATPase under normal cellular conditions? Select all that are true. O a. It moves protons into the intermembrane space O b. It generates ATP O C. It directly consumes NADH O d. It is a passive transporter O e. It is an enzyme
Stored Energy ATP + water + ATPase = a. ADP + Pi + energy b. ADP + ATPase + heat C. ADP + Pi + Pi d. ADP + heat + water OO00
The energy in ATP is - A. Stored between its phosphate groups B. Stored in the vacuoles C. Not widely used by cells D. Not very useful
An electron carrier is a compound that is reduced and then oxidized. is oxidized and then reduced. lowers activation energy. helps with active transport. is embedded in the cell membrane. d b C
Controlling the Rate of Energy Production 2 Metabolic enzyme activity can be increased by increasing the a. Na+ concentration b. cellular water content c. temperature d. activation energy OO
Chemiosmosis is described as an energy coupling mechanism that O a. builds up membrane potential across membrane O b. lowers pH in the intermembrane space. O c. phosphorylates substrate molecules. d. uses the stored energy of the proton gradient to synthesize AIP e. inhibits electron transfer along the electron transport chain.

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